| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275EU | MTRAK M275 EVENT UNIT | Digi International |
| 2 | 911414 | OS1/4 GS RS80RRelay | Weidmuller |
| 3 | 8690860000 | SRC 1CO PCBRelay Socket Through Hole | Weidmuller |
| 4 | 8690850000 | RELAY SOCKET PCBRelay Socket Through Hole | Weidmuller |
| 5 | AHKA21 | SOCKET SCREW TERM FOR AHK RELAYRelay Socket DIN Rail | Panasonic Electric Works |
| 6 | HL1-HTM-DC24V-F | RELAY GEN PURPOSE SPDT 15A 24VGeneral Purpose Relay SPDT (1 Form C) 24VDC Coil Chassis Mount | Panasonic Electric Works |
| 7 | T90N5D12-18 | RELAY GEN PURPOSE SPDT 20A 18VGeneral Purpose Relay SPDT (1 Form C) 18VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 8 | 70MRCQ24-HS | I/O MOUNTING BOARD MINI 24POSI/O Module Rack 24 Channel | Grayhill Inc. |
| 9 | G6K-2F-RF-T DC5 | RELAY RF DPDT 1A 5V | Omron Electronics Inc-EMC Div |